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Recent years have witnessed the explosive growth of recommender systems in various exciting application domains such as electronic commerce, social networking, and location-based services. A great many algorithms have been proposed to improve the accuracy of recommendation, but until recently the long tail problem rising from inadequate recommendation of niche items is recognized as a real challenge...
The study was to compare the characteristics of event-related potentials (ERPs) and brain topographic maps in normal group and cochlear implant (CI) group six months after device ‘switch on’. Results showed more negative N1 component by standard and target stimuli and lower P2 amplitudes were observed for the CI group. The amplitudes of MMN component were a little smaller than those of normal group...
Drain drainage design and calculation program is to conduct a series of work on the basis of completion of network routing design and calculation. There are some differences in design method between water pipes and storm sewer drainage system. The program is a bit different, but a large number of constraint condition and control methods are basically the same.
To improve the performance of the missile interceptors against modern air-defense threats such as ballistic missiles, a new integrated missile guidance and control with sliding mode differentiator and neural network algorithm is proposed in this paper. The three dimensional target and missile relative kinematics are firstly established based on which the zeroing line-of-sight (LOS) angular velocity...
Based on the chaos anti-control theory, a new Lorenz hyper chaotic system family is proposed by adding a linear controller to the three dimensional autonomous Lorenz system family in this paper. It has been verified that the systems in the newly proposed family have the possibility of hyper chaos by analyzing their symmetry, dissipation, the stability of their equilibrium points, as well as the Lyapunov...
By detecting the chromium (Cr) element intensity in soil for the different analytical spectra lines by laser induced breakdown spectroscopy (LIBS) technique, which is made up with an Nd: YAG ns laser at 1064 nm and a multichannel spectrometer with ICCD detector, DG535, computer and optical devices. And using the obvious quantitative methods that make use of the absolute intensity, the relative intensity...
Nowadays, with the processing technology of integrated circuits(IC) developing into deep sub-micron size and the scale of IC running into VLSI, the existing IC design methodology can hardly meet the demands for short time-to-market and continuous increasing functionality of IC products. Facing with these challenges, researchers all around the world have been chasing rapid design methods such as reconfigurable...
The application of multi-media in teaching attracts more and more educators' attention, but many problems of multi-media teaching and learning have still existed in many county-level high schools in Hebei province, and the concerning degree about this is relatively small. Therefore, this paper will use questionnaires and visits as the research methods to collect all aspects of information about multi-media...
The research performance of universities in China is evaluated in this study from the global perspective. Based on the Essential Science Indicators (ESI) database, this research mainly concerns the academic output in overall publication activity and the influential strength of certain disciplines of selected universities. Different types of bibliometric methods are applied in this study, including...
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